Biconvex lenses are manufactured with an identical convex surface on both sides of the lens it has positive focal lengths and form both real and virtual images. Aberrations such as coma distortion and chromatic aberration almost exactly cancel out at unit conjugate ratios due to the symmetry. Aberrations will increase as conjugate ratios depart from unity.
Specifications:
Material: | BK7 or UV fused silica etc. |
Focal Length Tolerance: | ±1% @589nm |
Design Wavelength: | 589nm |
Centration: | ≤3′ |
Diameter Tolerance: | +0/-0.1mm |
Clear Aperture: | >central 90% of diameter |
Center Thickness Tolerance: | ±0.1mm |
Edge Thickness: | 3.0mm,nominal |
Surface Quality: | 20/10(UVFS)/ 40/20(BK7) |
Surface Accuracy: | ≤ 1.5λ power,λ/2 irregularity(UVFS) ≤ 1.5λ power,λ/4 irregularity(BK7) |
Chamfers: | 0-0.8mm face width×45°±15° |
Notes: 1. Material, besides BK7, fused silica and any other materials are available. 2. Surface Quality could reach 40-20 or 20-10 3. Centration such as 1’, 30” is available. |
4. Please show us the size and the coating specification.
Part No. | DIA(mm) | F(mm) | Tc(mm) | MARERIALS |
INF-DCX-06-10 | 6.0 | 10.0 | 2.4 | BK7 |
INF-DCX-06-12 | 6.0 | 12.0 | 2.3 | BK7 |
INF-DCX-06-15 | 6.0 | 15.0 | 2.1 | BK7 |
INF-DCX-06-30 | 6.0 | 30.0 | 1.8 | BK7 |
INF-DCX-09-12 | 9.0 | 12.0 | 3.6 | BK7 |
INF-DCX-09-20 | 9.0 | 20.0 | 2.8 | BK7 |
INF-DCX-12-15 | 12.7 | 15.0 | 4.7 | BK7 |
INF-DCX-12-20 | 12.7 | 20.0 | 3.9 | BK7 |
INF-DCX-12-25 | 12.7 | 25.0 | 3.4 | BK7 |
INF-DCX-12-30 | 12.7 | 30.0 | 3.1 | BK7 |
INF-DCX-12-40 | 12.7 | 40.0 | 2.8 | BK7 |
INF-DCX-12-50 | 12.7 | 50.0 | 2.6 | BK7 |
INF-DCX-12-100 | 12.7 | 100.0 | 2.2 | BK7 |
INF-DCX-25-25 | 25.4 | 25.4 | 9.0 | BK7 |
INF-DCX-25-30 | 25.4 | 30.0 | 7.7 | BK7 |
INF-DCX-25-35 | 25.4 | 35.0 | 6.8 | BK7 |
INF-DCX-25-40 | 25.4 | 40.0 | 6.1 | BK7 |
INF-DCX-25-50 | 25.4 | 50.0 | 5.2 | BK7 |
INF-DCX-25-60 | 25.4 | 60.0 | 4.7 | BK7 |
INF-DCX-25-75 | 25.4 | 75.0 | 4.1 | BK7 |
INF-DCX-25-100 | 25.4 | 100.0 | 3.6 | BK7 |
INF-DCX-25-125 | 25.4 | 125.0 | 3.3 | BK7 |
INF-DCX-25-150 | 25.4 | 150.0 | 3.1 | BK7 |
INF-DCX-25-175 | 25.4 | 175.0 | 2.9 | BK7 |
INF-DCX-25-200 | 25.4 | 200.0 | 2.8 | BK7 |
INF-DCX-25-250 | 25.4 | 250.0 | 2.6 | BK7 |
INF-DCX-25-300 | 25.4 | 300.0 | 2.5 | BK7 |
INF-DCX-25-400 | 25.4 | 400.0 | 2.4 | BK7 |
INF-DCX-25-500 | 25.4 | 500.0 | 2.3 | BK7 |
INF-DCX-25-750 | 25.4 | 750.0 | 2.2 | BK7 |
INF-DCX-25-1000 | 25.4 | 1000.0 | 2.2 | BK7 |
INF-DCX-50-60 | 50.8 | 60.0 | 14.4 | BK7 |
INF-DCX-50-75 | 50.8 | 75.0 | 11.8 | BK7 |
INF-DCX-50-100 | 50.8 | 100.0 | 9.5 | BK7 |
INF-DCX-50-125 | 50.8 | 125.0 | 8.1 | BK7 |
INF-DCX-50-150 | 50.8 | 150.0 | 7.2 | BK7 |
INF-DCX-50-175 | 50.8 | 175.0 | 6.6 | BK7 |
INF-DCX-50-200 | 50.8 | 200.0 | 6.2 | BK7 |
INF-DCX-50-250 | 50.8 | 250.0 | 5.5 | BK7 |
INF-DCX-50-300 | 50.8 | 300.0 | 5.1 | BK7 |
INF-DCX-50-400 | 50.8 | 400.0 | 4.6 | BK7 |
INF-DCX-50-500 | 50.8 | 500.0 | 4.3 | BK7 |
INF-DCX-50-750 | 50.8 | 750.0 | 3.8 | BK7 |
INF-DCX-50-1000 | 50.8 | 1000.0 | 3.6 | BK7 |
Custom designs for other sizes and coatings are also available upon request.